Apparatus for indicating the speed of ships.



I ILSTAR. I APPARATUS FORINDIUATING THE SPEED OF SHIPS.- A APPLwATmfi FILED MAR.19, 1912.

1,952,387. Patented Feb, 4, 1913. A 2 SHEETfi-SHEET 1.

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R. STAR. APPARATUS FOR. INDIGATING THE SPEED OF SHIPS.

. I APPLIGAQION FILED MAR. 19, 1912,

Patented Feb. 4, 19113.

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operative RICHARD STAR, OF THE UNITED STATES NAVY.

APPARATUS FOR INDICATING 'I'I-Illil SPEED OF SHIPS.

Specification of Letters Patent.

Batented Feb. 4,1913;

Application filed March 19, 1912 SeriaLNo. 684,782.

To all whom it may concern I Be it known that I, RICHARD STAR, United States Navy, a citizen of the United States, stationed on board the U. S. S. U tah, have invent-ed certain new and useful Improvements in Apparatus for'Indicating the Speed of Ships; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap ertains to. make and use the same.

[y invention relates to improvements in apparatus for indicating the speed of ships, and it consists in the constructions, combinations and arrangements herein described and claimed.

An object of my invention is to provide an improved apparatus for indicating-the speed of ships, adapted to operate accurately at all speeds and to be readily thrown into and out of use.

A further object of my invention is to provide an improved apparatus adapted to furnish on the ships bridge, or any other convenient position, a visual indication of the ships speed, and which can be readily adjusted, or set, to produce a visual indication of any desired amplitude or scale.v

In the accompanying drawings forming a. part of this application, and in which similar reference symbols indicate corresponding parts in the several views :-F igure 1is a diagrammatic,transverse section of a ship, illustrating one embodiment of my invention applied thereto; Fig. 2 is an enlarged, vertical, axial section of the improved actuating device for the speed indicator shown in Fig. 1, the parts being shown in theirinposition; Fig. 3 is a view similar to Fig. 2, showing the parts shifted into position for indicating the maximum speed for which the device is set; Fig. 4 is a section on the line 44 of Fig. 3; and Fig. 5 is an elevation of the right-hand end of Figs. 2 and 3.

Referring to the drawings, 1 and 2 indicate fixed heads secured together by braces 3, which constitute guides for a shiftable orhead, 4. The heads 1 and 4 are connected by an expansible chamber, or bellows, comprising a series of diaphragms 5 formed of centrally-apertured disks of copper or other resilient material, which tend their resiliency to normally maintain said chamber in collapsed posltion, as shown connected by a 'contractible chamber comprising-resilient. d aphragms 6 secured to relatively thick annular spacing members 7 and 8; the resilient'diaphragms 6 tending to mamtaln said chamber in its normal ex.- panded posltlon shown in Fig. 2.

A yoke 9 is secured to the movable head 4 by pins 10 and slidably mounted in an adjustable stop 11 threaded in a standard 12, whiclihlatt-eris carried by the fixed head 1, or other stationary support. A; spring 13 is confined between disks 14 bearspiral ing against said yoke 9 and'stop -11,'and acts to augment the action of the resilient diaphragms in yleldlngly maintaining the movable head 4m its normal posltion shown in Fig. 2. The stop 11 can be readily adjusted to vary the tension of said spring 13 for accurately adjusting the actuating device to all various practical conditions, and for setting said device to produce a movement of the indicator corresponding to any desired scale. The expansible chamber of the diaphragms 5 is connected by a pipe 15.to an inlet pipe 16 provided with avalve 17,and

a telescoping section 18 having its outer end beveled to openforwardly in the direction of the ships travel, similar to the inlet pipe shown in my prior Patent #9888322, dated April 4, 1911, and the chamber of the diaphragms 6 is connected to a suction pipe 19 opening into the water of flotation rearwardly of the ships travel, and provided with a valve 20, similar to the suction pipe shown in my said prior Patent #988832.

An indicator 21 is mounted on the bridge, or at any desiredposition, and actuatingly connected toa cable, or wire, 22 having its end attached to the pin 10 of the shiftable head 4; said wire passing through protecting tubes 23 and over guide pulleys 24, 2 5, 26, 27, and 27 When the apparatus is to be used, the

the inlet and suction pipes in com-' pipe causes an injector action which produces a suction in the chamber formed by the diaphragms 6. The dynamic head of the Water'flotation, due to the speed of the ship therethrough, thus acts to produce a pressure on the front face of the movable v,head 4 and a suction on the rear face of said head; the combined action of such' pressure and suction causing av positive and accurate shifting of the movable head 4 upon variations'in the ships speed. i

1 rA hydraulic motor- 28 is shown connected by branch pipes 29 and 30 to the inlet and suction pipes 16 and 1.9; a pulley 31 being actuated by said motor to drive an endless cable 32 for operating any desired indicating device.- This construction is I fully show-n and described in my said prior Patent' #988832, and need not be further de-,

scribed herein.

' I have illustrated and described preferred and satisfactory constructions, but changes could be made within the spirit and scope --of my invention. f

I claim': .7

1. In an apparatus for indicating the speed of ships, the combination of a pair of expansible chambers, a common shiftable head for said pair of chambers, means for placing said chambers in communication with the water of flotation, and "adjustable means for yieldingly maintaining said shift- 'able head in' normal position.

2. In an apparatus for indicating the speed ofjships, the combination-of an indicator, a shiftable actuatingmember therea for, a pressure chamber comprising a series of closely-spaced resilient diaphragms con-' nected to oneface of said member, an inlet pipe communicating with said pressure chamber and opening into the Water of flotation forwardly of the ships travel, a suction chamber comprising a series of widely-spaced resilient diaphragms connected tothe other face ofsaid member, and a suction pipe leading from said suction chamher and opening'intothe water vof flotation rearwardly ofthe ships travel.

3. In an apparatus for indicating the speed of ships, the combination of an indicator, a shiftable actuating member there- .for, a ressu're chamber comprising a series of closely-spaced resilient diaphragms connected toone facev of said member, an .inlet I pipe communicating with sai pressure" chamber and opening into the'water of flotation forwardly of the ships' t-ravel, a

Copies of this patent may be obtained for shipstrave'h c 5. In an apparatus for indicating the speed of ships, the combination of fixed heads, a head shiftably mounted therebefive cents each, by addressing the suction chamber comprising a series of w dely-spaced reslllent dlaphragms connected to theother face of said member, a'suction pipe leading from saidsuct-ion chamber and opening into the water of flotation rearwardly of the ships travel, and adjustable means for yieldingly maintaining said shiftable member in normal position. i 4. In an apparatus for indicating the speed of ships, the combination of fixed heads, a head shiftably mounted therebetween, expansible chambers connecting the respective faces of said movable head with the adjacent fixed heads, a pipe communieating with one of said chambers and opening into the water of flotation forwardly of the ships travel, and a pipe leading-from:

the other of said chambers andopening into the water of flotation rearwardly of the tween, expansible chambers connecting the respective faces of said movable head withthe adjacent fixed heads, a pipe communi cating with one of said chambers and opening into the water of flotation forwardly of the ships travel, apipe leading from the 7 other of said chambers and opening into the water of flotation rearwardly of the ships travel, and means for .yieldingly maintaining said movable head in normal position,

6. In an apparatus for indicating the heads, a head shiftably mounted therebe- ,tween, a pressure chamber comprising a series of closely-spaced resilient diaphragms connecting one face of said movable head with the-adjacent fixed head, an inlet pipe communicating with said pressurechamber and opening into the water of flotation forwardly of the ships travel, a suction chamber comprising a series of widely-spaced resilient diaphragms connecting the other face of said movable head with the adjacent fixed head, a suction pipe leading from said suction chamber and opening into the water of. flotation rearward'ly of the ships travel, andfinmmissioner of Patents,

Washington, D. G. I

speed of ships, the combination of fixed- 

